i have the ofna picco buggy with the picco .21 bas pull start motor. i am currently running traxxas 20% fuel. and i believe the glow plug is a medium picco, not sure becausestill running the same plug that came with the motor. the motor after 1 1/4 gallons still has a slight mechanical pinch with the glow plug removed. my question is when i tune the high speed needle so the engine runs clean... the temps average about 270deg, and has gone as high as 290.it seemsthat i have plenty of smoke comming from motor. if i richen it an hour or two the motor looses perfomance, loads up, and just doesnt seem to want to clean out or run smooth. the temps will be 200 to 230deg. will changing fuel, glow plug or anything elsehelp temps or should i just throw temp gun away andtune by smoke and sound? trying to make this little motor last untill my driving skills warrant arace or at leaast a better quality motor. Suggestions would be greatly welcome. i know fuel could be a big factor but itsallmy lhs carries at this time. thanx in advance for any help. mark